src/mesa/state_tracker/st_texture.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "st_context.h"
  29 #include "st_format.h"
  30 #include "st_texture.h"
  31 #include "enums.h"
  32
  33 #include "pipe/p_state.h"
  34 #include "pipe/p_context.h"
  35 #include "pipe/p_defines.h"
  36 #include "pipe/p_inlines.h"
  37 #include "pipe/p_util.h"
  38 #include "pipe/p_inlines.h"
  39 #include "pipe/p_winsys.h"
  40
  41
  42 #define DBG if(0) printf
  43
  44 #if 0
  45 static GLenum
  46 target_to_target(GLenum target)
  47 {
  48    switch (target) {
  49    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  50    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  51    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  52    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  53    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  54    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  55       return GL_TEXTURE_CUBE_MAP_ARB;
  56    default:
  57       return target;
  58    }
  59 }
  60 #endif
  61
  62 struct pipe_texture *
  63 st_texture_create(struct st_context *st,
  64                   unsigned target,
  65                   unsigned format,
  66                   GLenum internal_format,
  67                   GLuint first_level,
  68                   GLuint last_level,
  69                   GLuint width0,
  70                   GLuint height0,
  71                   GLuint depth0,
  72                   GLuint compress_byte)
  73 {
  74    struct pipe_texture *pt = CALLOC_STRUCT(pipe_texture);
  75
  76    assert(target <= PIPE_TEXTURE_CUBE);
  77
  78    DBG("%s target %s format %s level %d..%d\n", __FUNCTION__,
  79        _mesa_lookup_enum_by_nr(target),
  80        _mesa_lookup_enum_by_nr(internal_format), first_level, last_level);
  81
  82    if (!pt)
  83       return NULL;
  84
  85    assert(format);
  86
  87    pt->target = target;
  88    pt->format = format;
  89    pt->internal_format = internal_format;
  90    pt->first_level = first_level;
  91    pt->last_level = last_level;
  92    pt->width[0] = width0;
  93    pt->height[0] = height0;
  94    pt->depth[0] = depth0;
  95    pt->compressed = compress_byte ? 1 : 0;
  96    pt->cpp = pt->compressed ? compress_byte : st_sizeof_format(format);
  97    pt->refcount = 1;
  98
  99    st->pipe->texture_create(st->pipe, &pt);
 100
 101    return pt;
 102 }
 103
 104
 105
 106
 107 /* Can the image be pulled into a unified mipmap texture.  This mirrors
 108  * the completeness test in a lot of ways.
 109  *
 110  * Not sure whether I want to pass gl_texture_image here.
 111  */
 112 GLboolean
 113 st_texture_match_image(struct pipe_texture *pt,
 114                           struct gl_texture_image *image,
 115                           GLuint face, GLuint level)
 116 {
 117    /* Images with borders are never pulled into mipmap textures.
 118     */
 119    if (image->Border)
 120       return GL_FALSE;
 121
 122    if (image->InternalFormat != pt->internal_format ||
 123        image->IsCompressed != pt->compressed)
 124       return GL_FALSE;
 125
 126    /* Test image dimensions against the base level image adjusted for
 127     * minification.  This will also catch images not present in the
 128     * texture, changed targets, etc.
 129     */
 130    if (image->Width != pt->width[level] ||
 131        image->Height != pt->height[level] ||
 132        image->Depth != pt->depth[level])
 133       return GL_FALSE;
 134
 135    return GL_TRUE;
 136 }
 137
 138
 139 #if 000
 140 /* Although we use the image_offset[] array to store relative offsets
 141  * to cube faces, Mesa doesn't know anything about this and expects
 142  * each cube face to be treated as a separate image.
 143  *
 144  * These functions present that view to mesa:
 145  */
 146 const GLuint *
 147 st_texture_depth_offsets(struct pipe_texture *pt, GLuint level)
 148 {
 149    static const GLuint zero = 0;
 150
 151    if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
 152       return &zero;
 153    else
 154       return pt->level[level].image_offset;
 155 }
 156
 157
 158 /**
 159  * Return the offset to the given mipmap texture image within the
 160  * texture memory buffer, in bytes.
 161  */
 162 GLuint
 163 st_texture_image_offset(const struct pipe_texture * pt,
 164                         GLuint face, GLuint level)
 165 {
 166    if (pt->target == PIPE_TEXTURE_CUBE)
 167       return (pt->level[level].level_offset +
 168               pt->level[level].image_offset[face] * pt->cpp);
 169    else
 170       return pt->level[level].level_offset;
 171 }
 172 #endif
 173
 174
 175 /**
 176  * Map a teximage in a mipmap texture.
 177  * \param row_stride  returns row stride in bytes
 178  * \param image_stride  returns image stride in bytes (for 3D textures).
 179  * \return address of mapping
 180  */
 181 GLubyte *
 182 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 183                      GLuint zoffset)
 184 {
 185    struct pipe_texture *pt = stImage->pt;
 186    DBG("%s \n", __FUNCTION__);
 187
 188    stImage->surface = st->pipe->get_tex_surface(st->pipe, pt, stImage->face,
 189                                                 stImage->level, zoffset);
 190
 191    return pipe_surface_map(stImage->surface);
 192 }
 193
 194 void
 195 st_texture_image_unmap(struct st_texture_image *stImage)
 196 {
 197    DBG("%s\n", __FUNCTION__);
 198
 199    pipe_surface_unmap(stImage->surface);
 200
 201    pipe_surface_reference(&stImage->surface, NULL);
 202 }
 203
 204
 205
 206 /* Upload data for a particular image.
 207  */
 208 void
 209 st_texture_image_data(struct pipe_context *pipe,
 210                       struct pipe_texture *dst,
 211                       GLuint face,
 212                       GLuint level,
 213                       void *src,
 214                       GLuint src_row_pitch, GLuint src_image_pitch)
 215 {
 216    GLuint depth = dst->depth[level];
 217    GLuint i;
 218    GLuint height = 0;
 219    const GLubyte *srcUB = src;
 220    struct pipe_surface *dst_surface;
 221
 222    DBG("%s\n", __FUNCTION__);
 223    for (i = 0; i < depth; i++) {
 224       height = dst->height[level];
 225       if(dst->compressed)
 226          height /= 4;
 227
 228       dst_surface = pipe->get_tex_surface(pipe, dst, face, level, i);
 229
 230       pipe->surface_data(pipe, dst_surface,
 231                          0, 0,                             /* dstx, dsty */
 232                          srcUB,
 233                          src_row_pitch,
 234                          0, 0,                             /* source x, y */
 235                          dst->width[level], height); /* width, height */
 236
 237       pipe_surface_reference(&dst_surface, NULL);
 238
 239       srcUB += src_image_pitch * dst->cpp;
 240    }
 241 }
 242
 243 /* Copy mipmap image between textures
 244  */
 245 void
 246 st_texture_image_copy(struct pipe_context *pipe,
 247                          struct pipe_texture *dst,
 248                          GLuint face, GLuint level,
 249                          struct pipe_texture *src)
 250 {
 251    GLuint width = src->width[level];
 252    GLuint height = src->height[level];
 253    GLuint depth = src->depth[level];
 254    struct pipe_surface *src_surface;
 255    struct pipe_surface *dst_surface;
 256    GLuint i;
 257
 258    if (dst->compressed)
 259       height /= 4;
 260    for (i = 0; i < depth; i++) {
 261       dst_surface = pipe->get_tex_surface(pipe, dst, face, level, i);
 262       src_surface = pipe->get_tex_surface(pipe, src, face, level, i);
 263
 264       pipe->surface_copy(pipe,
 265                          dst_surface,
 266                          0, 0, /* destX, Y */
 267                          src_surface,
 268                          0, 0, /* srcX, Y */
 269                          width, height);
 270
 271       pipe_surface_reference(&dst_surface, NULL);
 272       pipe_surface_reference(&src_surface, NULL);
 273    }
 274
 275 }